An 7.0 m, 240 n uniform ladder rests against a smooth wall., Ask an Expert

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An 7.0 m, 240 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0° angle with the ground. How far up the ladder can an 720 N person climb before the ladder begins to slip?

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